Isotec-Devint

Organic optoelectronic devices for integrated sensorics

The aim of the research project DEVINT is the successful integration of different optical, optoelectronic and electronic devices into one "plastic" sensor module. Differently chemically realised sensor principles are suggested, which are developed particularly in the partner projects SENSMAT, SENSPHYS and POLYSENS. The sensors are either fluorescence based (gas sensors for NH3, amines, CO2, humidity ...) or based on electret polymer foams (pressure).

In a first project phase, a sensor workplace consisting of optical and optoelectronic elements will be built up to determine the principally achievable sensor characteristics. Parallel to this work organic light emitting devices and photodiodes will be developed / enhanced to match the fluorescence excitation and emission characteristics of the sensor molecules. These building blocks are the initial point for the integration into one sensor device together with optical waveguides (or other light guiding elements), which are developed and adapted in the project STRUCMETH. This form of integration implies the generation of a bunch of optical and (opto)electronic interfaces. The properties of these interfaces at a nanoscale range are crucial for the successful performance of the complete system.

Fig.: Optical setup for a first test of the LED-sensor-film-OPC arrangement; with the scheme of the light propagatio